JPS55123018A - Rotary device - Google Patents

Rotary device

Info

Publication number
JPS55123018A
JPS55123018A JP2809479A JP2809479A JPS55123018A JP S55123018 A JPS55123018 A JP S55123018A JP 2809479 A JP2809479 A JP 2809479A JP 2809479 A JP2809479 A JP 2809479A JP S55123018 A JPS55123018 A JP S55123018A
Authority
JP
Japan
Prior art keywords
magnetic
fluid
pressural
housing
fixed shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2809479A
Other languages
Japanese (ja)
Inventor
Teruo Maruyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2809479A priority Critical patent/JPS55123018A/en
Publication of JPS55123018A publication Critical patent/JPS55123018A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • F16C33/741—Sealings of sliding-contact bearings by means of a fluid
    • F16C33/743—Sealings of sliding-contact bearings by means of a fluid retained in the sealing gap
    • F16C33/746—Sealings of sliding-contact bearings by means of a fluid retained in the sealing gap by a magnetic field
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • F16C17/102—Sliding-contact bearings for exclusively rotary movement for both radial and axial load with grooves in the bearing surface to generate hydrodynamic pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing Of Bearings (AREA)

Abstract

PURPOSE: To attain a high-accuracy rotation characteristic for a rotary device supported by fluid bearings, by combining a magnetic seal based on a magnetic lubricating fluid, with spiral groove fluid bearings or the like which have act for pressural feed in the axial direction and are asymmetrically provided.
CONSTITUTION: Radial spiral grooves 14, 15 are symmetrically provided so that they extend vertically on a fixed shaft 10 supported on a base 11 and rotatably engaged in a housing 12. The tip of the fixed shaft 10 is provided as a spherical pivot bearing 13. A permanent magnet 16 for a magnetic seal is provided near the opening of the housing 12 and retained by a casing 17. The clearances 18, 19 between the housing 12 and the vertical spiral grooves 14, 15 of the fixed shaft 10 are made different from each other. The upper clearance 19 is made smaller than the lower one 18 so that the downward pressural feeding force to a magnetic fluid 20 enclosed in the upper clearance 19 is stronger than the upward pressural feeding force to the magnetic fluid 20 in the lower clearance 18.
COPYRIGHT: (C)1980,JPO&Japio
JP2809479A 1979-03-09 1979-03-09 Rotary device Pending JPS55123018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2809479A JPS55123018A (en) 1979-03-09 1979-03-09 Rotary device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2809479A JPS55123018A (en) 1979-03-09 1979-03-09 Rotary device

Publications (1)

Publication Number Publication Date
JPS55123018A true JPS55123018A (en) 1980-09-22

Family

ID=12239192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2809479A Pending JPS55123018A (en) 1979-03-09 1979-03-09 Rotary device

Country Status (1)

Country Link
JP (1) JPS55123018A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109910A (en) * 1984-11-02 1986-05-28 Inoue Japax Res Inc Magnetic supporting device
JPS63168319U (en) * 1987-04-22 1988-11-02
JPH01131018U (en) * 1988-03-02 1989-09-06

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109910A (en) * 1984-11-02 1986-05-28 Inoue Japax Res Inc Magnetic supporting device
JPS63168319U (en) * 1987-04-22 1988-11-02
JPH01131018U (en) * 1988-03-02 1989-09-06

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